Troubleshooting Security and Networking

So far in this book, we have talked about Kubernetes architecture, the application life cycle, security, and networking. I hope that since this is the last chapter, we can follow on from Chapter 9, Troubleshooting Cluster Components and Applications, to talk about security and networking troubleshooting. This chapter provides the general troubleshooting approaches for troubleshooting errors caused by RBAC restrictions or networking settings. We have touched upon how to enable Kubernetes RBAC in Chapter 6, Securing Kubernetes, and upon working with Kubernetes DNS in Chapter 7, Demystifying Kubernetes Networking. Be sure to go back to these chapters and review the important concepts before diving into this chapter. We’re going to cover the following main topics in this chapter:

• Troubleshooting RBAC failures
• Troubleshooting networking